/* ── Table of Contents (sidebar view) ────────────────────────────── */

.toc-nav {
    flex: 1;
    overflow-y: scroll;
    overscroll-behavior: contain;
    padding: 12px 16px;
    padding-bottom: 19px;
    background: transparent;
}

.toc-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-nav li {
    margin: 1px 0;
    border-radius: 2px;
    border: 0.5px solid transparent;
    transition: background 0.12s, border-color 0.12s;
}

.toc-nav li:hover {
    background: #7ae58c44;
    text-shadow: 0 0 0.5px currentColor;
}

.toc-nav li.toc-active {
    border-color: #99999933;
    background: #91f2a185;
    text-shadow: 0 0 0.5px currentColor;
}

.toc-nav a {
    color: var(--text-primary, #1d1d1d);
    text-decoration: none;
    font-size: 12px;
    font-family: var(--font-sans);
    display: block;
    padding: 3px 8px;
    transition: color 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.toc-nav a:hover {
    color: var(--text-primary, #1d1d1d);
}

/* Indentation by heading level */
.toc-h1 { padding-left: 0; }
.toc-h2 { padding-left: 16px; }
.toc-h3 { padding-left: 32px; }
.toc-h4 { padding-left: 48px; }
.toc-h5 { padding-left: 64px; }
.toc-h6 { padding-left: 80px; }

/* Empty state */
.toc-empty {
    padding: 24px 16px;
    color: var(--text-muted);
    font-size: 12px;
    text-align: center;
    font-family: var(--font-sans);
    list-style: none;
}

/* TOC scrollbar */
.toc-nav::-webkit-scrollbar {
    width: 8px;
}

.toc-nav::-webkit-scrollbar-track {
    background: transparent;
    margin: 26px 0 14px;
}

.toc-nav::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.toc-nav:hover::-webkit-scrollbar-thumb {
    background: #6096e5ad;
}

.toc-nav::-webkit-scrollbar-thumb:hover,
.toc-nav::-webkit-scrollbar-thumb:active {
    background: #4a7bd0cc;
}